Özlem FINDIK, Fatma ÇEVİK, Mustafa AKAR, Münir Ziya Lugal GÖKSU

Bioaccumulation of some heavy metals (Cd, Fe, Zn, Cu) in two bivalvia species

Çalışmada (Mayıs 1999-Nisan 2000), Akkuyu Koyu'ndan (Içel-Türkiye) toplanan çift kabuklu yumuşakçalardan, Pinctada radiata Leach, 1814 ve Brachidontes pharaonis Fischer, 1870'in yumuşak dokularında Cd, Fe, Zn ve Cu birikimi araştırılmıştır. Ağır metal içerikleri, Perkin-Elmer 2380 Model Atomik Absorbsiyon Spektrofotometresi ile ölçülmüştür. Ağır metal birikim ortalamaları ve standart hatalar B. pharaonis'te 0,0605 ± 0,00467 $mu gg^{-1}$ Cd, 2,8227 ± 0,24486 $mu gg^{-1}$ Fe, 0,2979 ± 0,02368 $mu gg^{-1}$ Zn, 0,0355 ± 0,00303 $mu gg^{-1}$ Cu; P. radiata'da ise 0,0058 ± 0,00034 $mu gg^{-1}$ Cd, 0,3682 ± 0,04252 $mu gg^{-1}$ Fe, 0,1579 ± 0,00628 $mu gg^{-1}$ Zn, 0,0027 ± 0,00018 $mu gg^{-1}$ Cu (yaş ağırlık) olarak bulunmuştur. Buna göre, ağır metaller B. pharaonis'te Fe>Zn>Cd>Cu, P. radiata'da ise Fe>Zn>Cu>Cd şeklinde sıralanmıştır. Saptanan birikim miktarları, Türk standartlarının çok altında olduğundan, Akkuyu Koyu'nda ağır metal kirliliğinin olmadığı sonucunu çıkarmak mümkündür.

İki bivalvia türünde (?inctada radiata leach, 1814 ve Brachidontes pharaonis fischer, 1870) bazı ağır metal (Cd, Fe, Zn, Cu) Birikimlerinin araştırılması

Bioaccumulation of some heavy metals (Cd, Fe, Zn and Cu) in fresh parts of 2 bivalvia species (Pinctada radiata Leach, 181.4 and Brachidontes pharaonis Fischer, 1870) was examined in samples collected between May, 1999, and April, 2000, in Akkuyu Bay (içel, Turkey). Heavy metal contents in soft bodies were measured by an atomic absorption spectrophometer. The means of the amounts of heavy metals with standard errors were estimated as follows: 0.0605 ± 0.00467 $mu gg^{-1}$ Cd, 2.8227 ± 0.24486 $mu gg^{-1}$ Fe, 0.2979 ± 0.02368 $mu gg^{-1}$ Zn, and 0.0355 ± 0.00303 pgg"1 Cu (wet weight) for B. pharaonis, but for P. radiata the means were 0.0058 ± 0.00034 pgg"1 Cd, 0.3682 ± 0.04252 $mu gg^{-1}$ Fe, 0.1579 ± 0.00628 $mu gg^{-1}$ Zn, and 0.0027 ± 0.00018 $mu gg^{-1}$ Cu. In a comparison of the means, the order of magnitude will be Fe, Zn, Cd and Cu for B. pharaonis, and Fe, Zn, Cu and Cd for P. radiate these results were below Turkish legal standards. Therefore, we may conclude that there is no heavy metal pollution in Akkuyu Bay.

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